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Multiple equilibria in two-sector monetary economies: an interplay between preferences and the timing for money

机译:两部门货币储蓄的多重均衡:偏好与货币时机之间的相互作用

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摘要

In this paper, we study the occurrence of local indeterminacy in two-sector monetary economies. In order to capture the credit market imperfections and the liquidity services of money, we consider a general MIUF model with two alternative timings in monetary payments: the Cash-In-Advance timing, in which the cash available to buy goods is money in the consumers' hands after they leave the bond market but before they enter the goods market, and the Cash-After-the-Market timing, in which agents hold money for transactions after leaving the goods market. We consider three standard specifications of preferences: the additively separable formulation, the Greenwood-Hercovitz-Huffman (GHH) [18] formulation and the King-Plosser-Rebelo (KPR) [21] formulation. First, we show that for all the three types of preferences, local indeterminacy easily arises under the CIA timing with a low enough interest rate elasticity of money demand. Second, we show that with the CAM timing, determinacy always holds under separable preferences, but local indeterminacy can arise in the case of GHH and KPR preferences. We thus prove that compared to aggregate models, two-sector models provide new rooms for local indeterminacy when non-separable standard preferences are considered.
机译:在本文中,我们研究了两部门货币经济中局部不确定性的发生。为了捕获信贷市场的缺陷和货币的流动性服务,我们考虑一种通用的MIUF模型,该模型在货币支付中有两个替代时机:提前现金时机,其中可用于购买商品的现金是消费者中的钱他们离开债券市场之后但进入商品市场之前的时间,以及“现货后交易”时间,即代理商离开商品市场后持有交易货币的时间。我们考虑三种优先的标准规格:可加分离配方,Greenwood-Hercovitz-Huffman(GHH)[18]配方和King-Plosser-Rebelo(KPR)[21]配方。首先,我们表明,对于所有这三种偏好类型,在中央情报局时间安排下都容易出现局部不确定性,而货币需求的利率弹性很低。其次,我们表明,在CAM时序下,确定性始终在可分离的偏好下保持不变,但在GHH和KPR偏好的情况下,可能会出现局部不确定性。因此,我们证明,与总体模型相比,当考虑不可分离的标准偏好时,两部门模型为局部不确定性提供了新的空间。

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